New fossil records of bizarre Ferganolyda (Hymenoptera: Xyelydidae) from the Middle Jurassic of China

New fossil records of bizarre Ferganolyda (Hymenoptera: Xyelydidae) from the Middle Jurassic of China
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中国中侏罗世奇异的Ferganolyda(膜翅目:Xyelydidae)化石新记录

DOI:
10.1080/03115518.2015.958286
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发表时间:
2015-01
期刊:
影响因子:
1.3
通讯作者:
Ren Dong
Ren Dong
中科院分区:
地球科学4区
文献类型:
--
作者:
Wang Mei;Rasnitsyn Alex;r P.;Shih Chungkun;Ren Dong

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本文记述了费尔干线虫Ferganolyda Rasnitsyn,1983,F.eucalla和F.insolita两新种。此外,本文还根据新资料重新描述了F.Scylla Rasnitsyn,Zhang&Wang,2006和F.Chungkuei Rasnitsyn,Zhang&Wang,2006。这些保存完好的标本均采自内蒙古道虎沟村最新的中侏罗世九龙山组中国。根据新的形态资料,提供了该属8种的检索表。该属具有明显的性别二型性,新材料显示,雄性头囊的宽长比为3.1-3.6,而雌性头囊的宽长比为1.9-2.1。这些新发现加深了我们对已灭绝的叶蜂科(膜翅目)进化和关系的理解。
Two new species of Ferganolyda Rasnitsyn, 1983, F. eucalla and F. insolita, are described. Also, F. scylla Rasnitsyn, Zhang & Wang, 2006 and F. chungkuei Rasnitsyn, Zhang & Wang, 2006 are re-described based on new materials in this study. All of these well-preserved specimens were collected from the latest Middle Jurassic Jiulongshan Formation of Daohugou Village in Inner Mongolia, China. Based on the new morphological data,a key to the eight species of Ferganolyda is provided. This genus has significant sexual dimorphism,and the new materials show that males have head capsules with ratios of width to length ranging from 3.1 to 3.6, whereas females have ratios from 1.9 to 2.1. These new findings enhance our understanding of the evolution and relationships of the extinct Xyelydidae (Hymenoptera).
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